[Date Prev] | [Thread Prev] | [Thread Next] | [Date Next] -- [Date Index] | [Thread Index] | [List Home]
Subject: Meeting Reminder; EDXL-RIM & RDF: Fwd: RE: Em TC Call Needs YourGuys!
(Note: This is the third of three messages I will be sending out today relating to our meeting tomorrow. This one is a forward of a message to Alessandro that I thought the group might find useful in regard to how RDF can be useful for us.) >Date: Fri, 30 May 2008 06:29:08 -0700 >To: "Alessandro Triglia" <email@example.com> >From: Rex Brooks <firstname.lastname@example.org> >Subject: RE: Em TC Call Needs Your Guys! >Cc: >Bcc: >X-Attachments: > >Hi Alessandro, > ><snip--just stuff about last week's activities> > >RDF is well suited to a number of uses. OWL uses >it to formulate ontologies, for which it is >essential, but RDF Schema is particularly >well-suited to capturing relationships such as >"TargetArea is a member of the the Geospatial >Information category." So RDF "triples" can >capture category information to relate >taxonomies or controlled vocabularies to one >another, especially mapping equivalent terms >from one ValueListURN to another for our >purposes. (This is the major chunk of work some >party needs to do to make EDXL specifications >work across jurisdictional boundaries.) > >(Note: in terms of expressiveness, the decision >was taken by the Semantic Web Activity in W3C to >start with triples because the process of >developing resources internet-wide could proceed >much faster, and we now have triple stores in >the millions, approaching if not passing the >billion mark. However, eventually we have to >graduate to quads and higher-order tuples since >sequential triples [to describe >interrelationships in commutative and transitive >algebraic logic] is a major pain when we need >more expressive relationships. One of the >software geniuses I work with has a system that >is lightyears ahead of this, but it darn near >requires a government to afford it and hire >enough top-shelf admins and service-writers to >deploy it. However, it can telescope research >from hours to seconds, days to hours, months to >days, etc. I get the sdk when I can make it work >on one of my machines. Right now I could only >install the latest version 3.9 on a clean VM. I >don't have a 4 GB RAM system I can dedicate to >it. Wish I did! It just barely works on my 2 GB >RAM box in VMWare. It uses a dedicated SQL >Server 2005 db, [plus freemind concept-maps for >ad hoc ontological modeling], etc... > >That's one of the major semantic services I plan >to include in the IRSC SOA-RR under the covers, >so to speak. OWL-DL (Description Logic) is well >suited to taking RDF Schemas and specifying the >logical relationships between between >taxonomies. OWL-DL is the most computationally >useful way to specify hierarchical relationships >of the parent-child (inheritance) type because >it lends itself to machine-based commutative >(inference) reasoning. > >When you start studying OWL, I suggest you also include studying >Protégé http://protege.stanford.edu/ a free, >open source semantic editor with the OWL Plug-In >as an RDF/OWL editor, >Pellet http://pellet.owldl.com/ a free, open-source reasoner and >RacerPro a commercial adaptation of an early >open source toolset, e.g. a server-based >reasoner system. > >Cheers, >Rex > > >> >>> -----Original Message----- >>> From: Rex Brooks [mailto:email@example.com] >>> Sent: Tuesday, May 27, 2008 13:01 >>> To: Alessandro Triglia >>> Subject: RE: Em TC Call Needs Your Guys! >>> >>> Darn! Have fun, Alessandro, >> >> >>Sorry, Rex. In the last two days I was in West Virginia for a meeting with >>a customer. It was an 8-hour drive each way. I am sorry I missed the calls >>on Tuesday and Wednesday. How did it go? >> >>By the way, I finally found some time to read the W3C RDF primer. I already >>thought that RDF must be a nice technology (without knowing it), but it's >>even nicer than I expected. I am thinking RDF is a very good foundation for >>representing information. I am also thinking that it could even be used as >>a foundation for data exchange, with some advantages over the traditional >>schema-oriented (grammar-oriented) approaches. But it probably requires a >>different level of thinking from what most developers are used to. >> >>Alessandro >> >> >>> >>> Cheers, >>> Rex >>> >>> >Rex, >>> > >>> >I apologize. I cannot attend the meetings today. I will be >>> driving to >>> >West Virginia in half an hour. >>> > >>> >Alessandro >>> > > > >-- > >Rex Brooks >President, CEO >Starbourne Communications Design >GeoAddress: 1361-A Addison >Berkeley, CA 94702 >Tel: 510-898-0670 -- Rex Brooks President, CEO Starbourne Communications Design GeoAddress: 1361-A Addison Berkeley, CA 94702 Tel: 510-898-0670